Among the insects, butterflies occupy vital position in ecosystems and their occurrence and diversity are considered as an indicator of the health of any given terrestrial biotope. As herbivorous insects, the distribution of larval and nectar host plants has a distinct impact on the status of butterfly diversity. As a sub-tropical country, Bangladesh is a realm of biological diversity. However, in Bangladesh the butterfly fauna is not well documented. The most distinguished study has been carried out by Larsen. Considering the floral diversity and habitat variations, it is estimated that between 500 and 550 butterfly species should be present in Bangladesh. With the aim to document the diversity and distributions of butterflies, the present study was conducted in an area within the eastern region of Bangladesh.